Question

File1.txt（基本文件）

header1|header2|header3|header4

1|2|3|4

FILE2.TXT

header1|header10|header3|header4

5|6|7

期望的O / P

在位置2的文件2中缺少header2

header10在位置2的文件2中添加

我需要比较两个文件头，并且需要显示相对于基本文件头列表的缺少的标题或添加列。

Answer 1

您可以使用awk，如下所示：

check.awk

# In the first line of every input file save the headers
FNR==1{
    headers[f++]=$0
}

# Once all lines of input have been processed ...
END{

    # split() returns the number of items. The resulting
    # arrays 'a|b_headers' will be indexed starting from 1
    lena = split(headers[0],a_headers,"|")
    lenb = split(headers[1],b_headers,"|")

    for(h=1;h<=lena;h++) {
        if(a_headers[h] != b_headers[h]) {
            print a_headers[h] " missing from file2 at column " h
        }
    }

    for(h=1;h<=lenb;h++) {
        if(b_headers[h] != a_headers[h]) {
            print b_headers[h] " missing from file1 at column " h
        }
    }
}

这样称呼：

awk -f check.awk File1.txt File2.txt

输出：

header2 missing from file2 at column 2
header10 missing from file1 at column 2

Answer 2

我会尝试diff这样的命令：

diff <(head -n1 fh1.txt | tr "|" "\n") <( head -n1 fh2.txt | tr "|" "\n")

其中fh1.txt和fh2.txt是您的文件。输出提供了您想要的信息，但不是那么详细。

比较两个分隔文本文件的标题

2 个答案: